Which cells relay messages from photoreceptor cells to non-photoreceptor cells?
a. optic ganglion cells
b. amacrine cells
c. bipolar cells
d. rods and cones
e. horizontal cells
C
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Answer the following statements true (T) or false (F)
1. Myosin is a motor protein that walks along intermediate filaments. 2. The flagellum is composed of a 9 + 2 arrangement of microtubules called the axoneme. 3. Materials move in and out of the nucleus via endocytosis and exocytosis. 4. The Endosymbiosis theory best describes the origins of peroxisomes in eukaryotes.
In alcoholic fermentation, the final product is
a. pyruvate b. ethanol c. acetaldehyde d. acetyl CoA e. lactate
The chemical evolution theory states that the first living molecule needed these two attributes:
A) It could acquire energy and catalyze reactions. B) It could maintain homeostasis and acquire energy. C) It could serve as a replication template and could catalyze reactions. D) It could acquire energy and serve as a replication template.
The cellular organelle responsible for the digestion of ingested infectious agents is the
A. endoplasmic reticulum. B. Golgi apparatus. C. phagolysosome. D. lysosome.